The statute reads in part that a person cannot operate a vehicle “unless such motor
vehicle is equipped with an adequate muffler . . . and properly maintained to prevent any
excessive or unusual noise, or annoying smoke.”

The statute also states that exhaust systems cannot be modified “in a manner which will
amplify or increase the noise emitted by the motor above that emitted by the muffler
originally installed on the vehicle.”

The law does not require an officer determine an actual decibel level to enforce the
statute; the officer’s observation and description of the violation are generally sufficient.